Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006
We report GOMOS nighttime observations of middle atmosphere NO2 and O-3 profiles during eight recent polar winters in the Arctic and Antarctic. The NO2 measurements are used to study the effects of energetic particle precipitation and further downward transport of polar NOx. During seven of the eigh...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2007
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ftnerc:oai:nora.nerc.ac.uk:10327 2023-05-15T13:45:10+02:00 Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 Seppälä, Annika Verronen, Pekka T. Clilverd, Mark A. Randall, Cora E. Tamminen, Johanna Sofieva, Viktoria Backman, Leif Kyrölä, Erkki 2007-06 http://nora.nerc.ac.uk/id/eprint/10327/ https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007GL029733 unknown American Geophysical Union Seppälä, Annika; Verronen, Pekka T.; Clilverd, Mark A. orcid:0000-0002-7388-1529 Randall, Cora E.; Tamminen, Johanna; Sofieva, Viktoria; Backman, Leif; Kyrölä, Erkki. 2007 Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006. Geophysical Research Letters, 34 (12), L12810. 5, pp. https://doi.org/10.1029/2007GL029733 <https://doi.org/10.1029/2007GL029733> Atmospheric Sciences Publication - Article PeerReviewed 2007 ftnerc https://doi.org/10.1029/2007GL029733 2023-02-04T19:26:40Z We report GOMOS nighttime observations of middle atmosphere NO2 and O-3 profiles during eight recent polar winters in the Arctic and Antarctic. The NO2 measurements are used to study the effects of energetic particle precipitation and further downward transport of polar NOx. During seven of the eight observed winters NOx enhancements occur in good correlation with levels of enhanced high-energy particle precipitation and/or geomagnetic activity as indicated by the Ap index. We find a nearly linear relationship between the average winter time Ap index and upper stratospheric polar winter NO2 column density in both hemispheres. In the Arctic winter 2005 - 2006 the NOx enhancement is higher than expected from the geomagnetic conditions, indicating the importance of changing meteorological conditions. Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic Natural Environment Research Council: NERC Open Research Archive Antarctic Arctic Geophysical Research Letters 34 12 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Atmospheric Sciences |
spellingShingle |
Atmospheric Sciences Seppälä, Annika Verronen, Pekka T. Clilverd, Mark A. Randall, Cora E. Tamminen, Johanna Sofieva, Viktoria Backman, Leif Kyrölä, Erkki Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
topic_facet |
Atmospheric Sciences |
description |
We report GOMOS nighttime observations of middle atmosphere NO2 and O-3 profiles during eight recent polar winters in the Arctic and Antarctic. The NO2 measurements are used to study the effects of energetic particle precipitation and further downward transport of polar NOx. During seven of the eight observed winters NOx enhancements occur in good correlation with levels of enhanced high-energy particle precipitation and/or geomagnetic activity as indicated by the Ap index. We find a nearly linear relationship between the average winter time Ap index and upper stratospheric polar winter NO2 column density in both hemispheres. In the Arctic winter 2005 - 2006 the NOx enhancement is higher than expected from the geomagnetic conditions, indicating the importance of changing meteorological conditions. |
format |
Article in Journal/Newspaper |
author |
Seppälä, Annika Verronen, Pekka T. Clilverd, Mark A. Randall, Cora E. Tamminen, Johanna Sofieva, Viktoria Backman, Leif Kyrölä, Erkki |
author_facet |
Seppälä, Annika Verronen, Pekka T. Clilverd, Mark A. Randall, Cora E. Tamminen, Johanna Sofieva, Viktoria Backman, Leif Kyrölä, Erkki |
author_sort |
Seppälä, Annika |
title |
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
title_short |
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
title_full |
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
title_fullStr |
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
title_full_unstemmed |
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006 |
title_sort |
arctic and antarctic polar winter nox and energetic particle precipitation in 2002-2006 |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
http://nora.nerc.ac.uk/id/eprint/10327/ https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007GL029733 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic Arctic |
genre_facet |
Antarc* Antarctic Arctic Arctic |
op_relation |
Seppälä, Annika; Verronen, Pekka T.; Clilverd, Mark A. orcid:0000-0002-7388-1529 Randall, Cora E.; Tamminen, Johanna; Sofieva, Viktoria; Backman, Leif; Kyrölä, Erkki. 2007 Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006. Geophysical Research Letters, 34 (12), L12810. 5, pp. https://doi.org/10.1029/2007GL029733 <https://doi.org/10.1029/2007GL029733> |
op_doi |
https://doi.org/10.1029/2007GL029733 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
12 |
_version_ |
1766214074705641472 |